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山西省是产煤大省,但同时由于煤炭开采引发的事故带来的安全生产问题,已经成为其产业发展不可忽视的问题之一。为了考察寺家庄矿抽采钻孔的合理封孔深度,通过理论分析寺家庄矿工作面前方煤体的应力三带分布,计算出了抽采钻孔的封孔深度要大于9.5 m,同时选择寺家庄矿的15203工作面现场试验了不同封孔深度(封孔深度分别为9 m、12 m、18 m、24 m),并考察了钻孔的抽采效果,结合成本核算最终确定了寺家庄矿抽采钻孔的合理封孔深度为22 m。
Shanxi Province is a major coal-producing province, but at the same time, it has become one of the issues that can not be neglected in its industrial development due to the safety in production caused by accidents caused by coal mining. In order to investigate the reasonable sealing depth of SiJiaZhuang mine drainage borehole, through the theoretical analysis of the distribution of stress three-zone of coal body in front of the work face of SiJiaZhuang mine, it is calculated that the sealing depth of drainage drilling is greater than 9.5 m, The 15203 working face of Sijiazhuang Mine was tested on site with different sealing depths (sealing depths of 9 m, 12 m, 18 m and 24 m, respectively) and the effect of drilling was investigated. Based on cost accounting, The reasonable hole sealing depth for the drainage hole in Zhuang Mine is 22 m.